Fixed a typo in the user guide.

guide/mu/guide.dtx

@@ -106,7 +106,7 @@
   (through port 22222) or over the remote desktop
   protocol\footnote{
     For more information about connecting through the remote
-    desktip protocol, see
+    desktop protocol, see
     \url{http://www.math.muni.cz/aktuality/347-vzdaleny-pristup-yoda-vader.html}.}
   (through port 13556), or to use any public-access computer at the
   \makeatletter\thesis@english@facultyName\makeatother\ that runs